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• 15:30, 5 July 2023 Admin talk contribs deleted page ऑपरेशनल एंप्लीफायर (content was: "{{short description|High-gain voltage amplifier with a differential input}} {{Infobox electronic component |name = Operational amplifier |image = Ua741 opamp.jpg |caption = A μA741 integrated circuit, one of the most successful operational amplifiers |type = Discrete circuit<br/>Integrated circuit |working_principle = |invented = Karl D. Swartzel Jr. |first_produced = 1967 |pins = *V+: non-i...")